Gate.



W. H. OLIVE.

GATE.

APPLIGATION FILED MAY 1, 1912.

Patented Oct. 15, 1912.

3 SHEETS-SHEET 1.

W. H. OLIVE.

GATE.

APPLICATION FILED MAY 1, 1912.

cnLuMglA PLANDGRAPH 60., WASHINGTON. D. c.

Patented Oct. 15, 1912.

3 SHEETS-SHEET 2.

W. H. OLIVE.

GATE.

APPLICATION FILED MAY 1, 1912.

1,041,663. Patented Oct. 15, 1912.

I 3 SHEETS-SHEET 3.

@XMMMM I l I 1 w a "z a 1 l-DLUMBA Non TED STATES WILLIAM H. OLIVE,OFMENOIVIINEE, MICHIGAN.

GATE.

Application filed May 1, 1912. Serial No. 694,444.

To all whom it may concern:

Be it known that I, WILLIAM H. OLIVE, a citizen of the United States,residing at Menominee, in the county of Menominee, State of Michigan,have invented certain new and useful Improvements in Gates; and

I do hereby declare the following to be a full, clear, and exactdescription of the in vention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in gates employed in connectionwith draw bridges, and the principal object of the invention is toprovide a gate which is normally held open by a novel mechanism when thedraw is closed, and which is automatically lowered when the draw isopened.

Another object of the invention is to provide gates which arerespectively arranged 011 either side of the draw and which are adaptedto be actuated by said draw irrespective of the direction of movementthereof.

A further object of the invention is .to.

novel combination of parts hereinafter fully described, illustrated inthe accompanying drawings and pointed out in the claims hereto appended;it being understood that various changes in the form, proportion, sizeand minor details of construction within the scope of the claims may beresorted to without departing from the spirit or sacrificing any of theadvantages of the invention.

In the drawings: Figure 1 is a top plan view of a draw bridge showingthe application of my invention, Fig. 2 is a transverse sectional viewtaken on the line 22 of Fig. 1, the gates being shown in a closedposition, Fig. 3 is a similar view but showing the gates in theirelevated positions, Fig. 4 is a detail longitudinal sectional viewshowing the connection between the draw and the rock shaft, Fig. 5 is adetail perspective view of one end of the draw showing the connectionbetween the gate and the rocker arm, Fig. 6 is a perspective view of oneof the gates, Fig. 7 is a perspective view of the Specification ofLetters Patent.

Patented Oct. 15,1912.

rocker arm, and Fig. 8 is a perspective view of a cross head and rackbar.

Like reference numerals designate corresponding parts in allt-he figuresof the drawlngs.

Referring to the drawings, 5 designates a bridge of any suitableconstruction which includesthe usual draw or turntable 6. Any suitablemechanism (not shown) may be employed to rotate said draw. The bridgeincludes the usual sidewalks A-A on either side thereof and the roadwayB which is centrally disposed between said sidewalks.

Disposed on either side of the approach 5 is a pair of transverselyalined casings 77, said casings being disposed on either side of theroadway B. -Pivotally mounted on opposite sides of the upper end of eachcasing 7 are opposed segmental gears 88, each gear terminating at itsouter end in an arm 9.. Gates 101O of any suitable construction aresecured at one end to the respective arms 9 and are adapted to swing ina ninety degree are by a mechanism hereinafter more fully described, oneof said gates projecting partially over the roadway B and the otherprojecting over a respective sidewalk A. These gears 8 are disposed inalinement and in spaced relation and arranged therebetween and engagingsaid gears is a double-faced rack bar 11 which extends downwardly and isconnected at its lower end to a cross head 11%, said cross head beingmounted to slide vertically between suitable guide strips 12. A pitman13 has its upper end pivotally connected to the cross head and thispitman extends downwardly through a suitable opening formed in thebridge 5. Supported by the bridge and in alinement with the respectivepairs of casings 77 are alined crank shafts 14.14@, each shaft having acrank 15 which is operatively connected to the lower end of a respectivepitman 13. These shafts are supported in suitable brackets 16, andmounted upon the inner end of each shaftis a bevel gear 17 and thesegears are simultaneously driven by a main bevel gear 18 which is mountedon a longitudinally disposed rock shaft 19 that is suitably supportedfrom the bridge by means of brackets 20. The inner end of each shaft 19extends below the outer edge of the draw or turntable 6, and associatedwith each end is a rocker arm 21 which carries at its free end a roller22 which is adapted to be engaged by one of a pair of diametricallyopposed cam plates 23 which are carried by the draw.

Normally the rocker arms 21 are disposed in horizontal planes, and areheld in such positions by means of the cams 23, it being understood ofcourse that the draw 6 is in its closed position. As soon as the draw 6is swung around, the cams 23 will of course become disengaged from therocker arms 21 and in order to assist in the rotation of the shaft 19 soas to lower the gates 10, the shaft 19 is provided with an arm 24; whichis disposed in alinement with the rocker arm 21, and this arm carries aweight 25. As a result, as soon as the cams 23 become disengaged fromthe respective rocker arms, the weights 25 will assist in rotating theshaft 19 and this shaft, through the beveled gear 19 and gears 17 willrotate the crank shafts 14. These crank shafts will in turn,- throughthe medium of the cranks 15 raise the cross heads 11 through the mediumof the pitmen 13 and consequently elevate the rack bars 11 which in turnwill actuate the segments 8 to swing the gates downwardly so as to closethe bridge. When the draw is returned to its normal position, the cams23 will of course engage the rollers 22 of the rocker arms 21 and willrotate the shaft 19 against the weight 25. This movement will return theparts to their normal positions, and as a result the gates 10 will bedisposed in an elevated position, thereby opening the bridge to traffic.

What is claimed is:

In combination with a bridge and its turntable, of a casing supported bythe bridge opposed segmental gears pivotally mounted in the casing,gates respectively carried by said gears, a double-faced rack bardisposed between and engaging said gears, a rock shaft longitudinallysupported below the bridge and havingone end projecting under theturntable, operative connections between said shaft and the rack bar, arocker arm fixedly connected on the projecting end of said shaft, meanscarried by .the turntable for engagement with the rocker arm to rotatesaid shaft, an arm projecting from the shaft and arranged in alinementwith the rocker arm, and a weight carried by said arm for returning thegates to their upright positions. 1

In testimony whereof, I afiix my signature, in presence of twowitnesses.

WILLIAM H. OLIVE. Witnesses:

JOHN MCDONALD, MICHAEL SULLIVAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

